Mechanism for type wetter



July 7, 1936.

G. MEZ

MECHANISM FOR TYPEWRITER CALCULATING MACHINES Filed Nov. 11, 1929 '7 SheetSSheet 1 July 7, 1936. G. MEZ

MECHANISM FOR TYPEWRITER CALCU LATING MACHINES Filed Nov. 11, 7 Sheets-Sheet 2 July 7, 1936. G. MEZ

MECHANISM FOR TYPEWRITER CALCULATING MACHINES '7 Sheets-Sheet 3 Filed NOV. 11, 1929 G. MEZ 2,046,524

MECHANISM FOR TYPEWRITER CALCULATING MACHINES Filed Nov. 11, 1929 7 Sheets-Sheet 4 July 7, 1936.

July 7; 1936. G. MEZ 2,046,524

MECHANISM FOR TYPEWRITER CALCULATING MACHINES Filed Nov. 11, 1929 7 Sheets-Sheet 5 July 7, 1936. a ME 2,046,524

MECHANISM FOR TYPEWRITER CALCULATING MACHINES Filed Nov. 11, 1929 7 Sheds-Sheet 6 IIIITIIIIIIIIIQ July 7, 1936. MEZ 2,046,524

MECHANISM FOR TYPEWRITER CALCULATING MACHINES Filed Nov. 11, 1929 7 Sheets-Sheet 7 Patented July 7 1936 MECHANISM non CALCULATING MACHINES .Gustav Mez, Dahlem, near Berlin, Germany, assignor to Mercedes Buromaschine'n-Werke Aktiengesellschaft, Benshausen, Germany Application November 11, 1929, Serial No. 406,475 g t In Germany November 12, 1928 120mm. (01.23H9l W.

This invention relates to mechanism for typewriter calculating machines and the like in which there is a carriage return means, clearance sign printing means and pick-up means for the cross- 5 footers, all controlled by the carriage movement.

According to the invention means are provided whereby when rendering the carriage escapement means inoperative, the carriagereturn means, the clearance sign printing means and the pick-up and automatically rendered inoperative together or only partially according to which member renders the carriage escapement means inoperative.

In this manner, when moving the paper carriage by depression of the carriage release key or the tabulator keys, the carriage return means, the clearance sign printing or the pick up means for the cross footers are prevented from being set in operation which would give rise to damage of 20 the machine or errors in calculation or the like.

The carriage release lever is combined with the mechanism for rendering 'all of the aforesaid means inoperative while during the movement of the carriage by .the decimal tabulator keyonly 25 the carriage return and clearance sign printing means are rendered inoperative whereby when de- 35 footers were inoperative.

This disadvantage is obviated according to the,

invention in that when rendering. the cross footer or the pick-up meansfor the same inoperative; the clearance sign printing means is simultaneously and automatically rendered inoperative.

With these and other objects in view, which will be apparent as the description proceeds. at de-' tailed description of the preferred embodiment of the invention is set forth below and claimed in the appended claims. r

Several constructional forms of the invention are shown by way of example in the accompanying drawings. r Figure 1 is a front view of a power driven typewriter calculating machine having two cross foot ers. wherein the most suitable constructional form of the invention is shown.

Figure 2 is a side elevation of Figure I viewed in the direction of the arrow A. 4

Figure 2a shows a fragmentary view of a cermeans for the cross footers ,are simultaneously I the clearance sign was possible when the cross tain position of thecouplin controlling means in the direction of the arrow s in Fig. 2.

Figure 3 is a'perspective view of the pick-up means for the cross footers,- the controlling mechanism for the clearance sign printing means and the controlling mechanism for the carriage return means. A

Figure 4 is'a view towards the pick-up means for the cross footers in operative position.- v

Figure 4a shows a perspective view of the cross footer locking dog. 7 v I Figure 5 is a view or the pick-up means shown in Figure 4 in inoperative position.

Figure 6 shows a modified form of a detail of the invention. 4

the invention onan enlarged scale.

Figure 9 shows diagrammatically .a special position of two verticahtotalizers in relation to the 4 pick-up means. 1 1

Figure 10 shows in perspective the escapement Figures 7 and 8 show in perspective'details of mechanism with hired and stepping dog therefor.

Figure 11 shows in perspective the pick-up means for the cross footers, some parts being shown separately for the sake of cleamess.

Figure 12 shows in perspective. the cross foota carriage with the cross footers secured thereto, apart of the left cross footer being shown broken. away for uncovering some sections.

Figure 13 shows the suspending rail for totalizers which is. secured to the paper carriage, together with a totalizer; in perspective, some parts being shown'separately for the sake of clearness. 1 1 I Figure '14 "shows-in perspective the mechanism operated by the totalizers. g

Figure 15 shows inperspective parts of the carriage escapement mechanism shown in Figure 10 but'seen inthe direction opposite-to that in Figure--10. I V Figure 16 shows in perspective the clearance sign printing means. w

Figure 1'7 shows the driving and coupling m 'for the power operated cam shaft R0! the type- "writing mechanism partly in elevation and partly n in section. t The description of the invention proper will. be preceded by a brief explanation ofthe opera:

tion of the typewriter calculating machine'fully w described in U. S. Patent Number 1,862,240. 3

I is the frame of the typewriter calculating machine and the carriage l carrying the platen 3 is I slidably arranged on \the rails 2 and In (Fig. 2).

' By means of the carriage pulling spring'notv shown, the carriage 4 is urged constantly (Fig. 1)

the. 30

. 4 contact with the cam disk 21 by means of a roller There is provided at the front of the type-v writer the rear wall 1 of the actuator which carries all the counting mechanisms while the driving shaft IQ for operating the actuator is wheel I5 secured thereto, the chain I6 and the sprocket wheel I! arranged onthe shaft Ill itself.

The ratchet wheel I B is fixed to the shaft I0 and rotates therewith. Such a ratchet wheel I8 is provided for each of the ten calculating keys. The calculating key levers, 20 are pivotally mounted at 2| on the machine frame and are normally maintained in their position (Fig. 2) by the springs 24 engaging at one end the hook 22 of the lever 20' and at the other end the stationary hook 23. The abutment or stop 26 contacting the lug limits the'pivoting action in one direction. If the'key i9 is depressed, the lever 20, being rocked on its pivot 2| clockwise, will release with its rearwardly extending member 201) the pawl 28 which is slidably arranged on the cam disk 21 which is loosely mounted on the shaft III. The

said pawl 28 therefore moves in the direction of the arrow b under'the action of the compression spring 29 acting on the pawl, and the lug 30 upon said pawl, engages the constantly rotating ratchet wheel I8. I A

As is readily obvious, the cam disk 21 corresponding to the depressed key* will thereby be coupled with the ratchet wheel I8 and the shaft C III respectively for a single revolution. Consequently, the counting slide 32, which comes in 3I moves downwardly first under the action .of its engaging spring 33 and then upwards again by the rotation of the cam 21. The slot 34 of the counting slide 32 corresponding to the value of the depressed key acts on the rod 35 of a rocking frame secured to the rotatably mounted shaft ,36 whereby the shaft36 is turned an amount in conformity with the depressed value. There is mounted on the shaft 36 the well known segment,

.which is designated 21 in the aforesaid U. S. Patent No. 1,862,240 and which transfers the amount over the one way ratchetgear, and the direct or reversing gear train (also fully described in said U. S. patent) to the totalizers and cross footers relative to addition and subtraction respectively.

In order to maintain: the cam disk 21 in its normal position shown in Figure 2,'the cam is secured to a disk 21 on which is rotatably mounted a roller. 2'la on the opposite side of the cam 21. The said roller cooperates witha lever 21?) which is also pivoted at 21 and in the normal position of cam 21, is always kept in contact with the roller 21a by a spring secured to the lever and also at 21:11: on the machine frame. Since the endof the lever 21b away from the roller 21a does not bear against the member 26, the cam disk 21 will 'is fixed by means of screws 58a, 56b to the well of the machine frame I covering the calculating mechanism a bracket 38 wherein by means of balls 3811 a carriage 3817 (Fig. 12) is slidably mounted on which the two cross footers 39 and 40 are secured. There is secured to the car- 5 riage 38b a pin 38c with which a spring 3811 engages which is suspended or hooked .in with its other end by a pin 38f secured -to the cross piece 38e of the bracket '38. By means of the spring 38d the carriage 38b is pulled against the cross 10 piece 38e of the bracket 38 whereby its normal position, as shown in Figs. 1 and 12, is established. I I i There is connected to each of the'two cross footers 39 and 40 a controlling mechanism for 15 the "clearance sign printing means, which will now be fully described. Q a

The lug or flap Mn. is riveted to the rod 4| (Figs. 2 and 3) which as hereinafter elucidated is connected to the carriage release lever 42 and 20 the tabulator key 43. The said lug or flap Ma acts on the lug or projection 44 of the lever 45 adaptedto pivot on the machine frame I by means of a screw 4411.. The lever when pivoting clockwise acts on the beveled portion 48 of 25 the two-armed lever 41 which v comprises the arms 41a and hand is adapted to rotate on the of the lever arm 47b and extends through slots 50 of the two levers 5i and 52. There are formed 35 on the said two levers 5|, and 52 projections or lugs 53 and 54 which cooperate with the cams 55b and 550 (Figs. 1, 4 and 5) of the totalizers 552' and 551' mounted on a rail '55 (Fig. 13) which known carriage front rail. Triangular grooves each having a bevel edge 51 and 58 are also provided in the levers SI and 52, and a pin 59 secured to the machine frame I extends into the said recesses. The lever:. 5| and 52 are secured by means of screws 80 and BI to the levers G2 and 63. It is obvious from Figure 3 that by means of the triangular perforations and the pin 59 as well as the, elements 50', 49, 4'! and the spring 41d, the levers 5| and 52 are maintained in their horizontal normal position shown in Figures 3 and 4.

The levers 62 and B3 are connected at 64 and 65 to the machine frame and are actuated clockwise by tension springs 66 and 61 :(FigiB) attached to the pins 68 and 69, the normal position of the levers 52 and 63 being maintained by means of the coaction of the triangular grooves with the pin 59. The levers Til and ll (Figs. 1, 2, 3 and 8) are adapted to pivotfreely on an axle l2 belowthe bracket 38 and cooperate with the levers 62 and t3.

By means of a U-rail 13 the lever ill is connected at its forwardly extending free end (Figs. 1 and 8) to a lever 71% rotatably mounted on the axle l2. To the U-rail l5, levers ill and 1B are secured which arerotatably mounted on the axle l2.

By means of rollers W and 13 (Figs. 1 and 2) the said U-rails l3 and 15 are slidably connected to the slides 19 and at Fig. 12 adapted to move vertically on the Walls of the cross footers 39 and fill. Each slide 119 and 8&3 has two upwardly extending members iii and [32, which are con- 75 nected by means of the screws83 and 84 to members 85 and 86 of the rake-like rails 89 and 90 actuated by springs 81 and 88 Figure 2. The rails 89 and 90 are adapted to pivot on the screws SI and 92 on the side walls of the cross 'footers 39 and 40 and cooperate with'the numeral gears Z which have in the known manner a shortened I tooth on the part corresponding to the zero position of the totalizer wheels B. In Fig. 12 the totalizer wheels B are shown close together for the sake of simplicity while there is actually a space between all of them for the toothed wheels Z secured to them and consequently an engagement of the rails 99 and 90 between the totalizer wheels B is also possible. I

A two-armed lever. comprising the bridge 93 (Figs. 8 and 16) and the arms 94 and 95 is also rotatablymounted on the axle 12. The arm 94 is provided with a knob 96 and'the arm 94 may be actuated by the lever 14 (Figs. 1, 2 and 8) of the U-rail 13 as well as by the arm H of the 1 .U-rail- 15. By means of thescrews 91 a lever mediate lever I03 by apin I01 and is constantly '98 is secured to the downwardly extending arm 95 (Fig. 1) the lower 'end, of the said lever 98 being provided with a cam slot, 99. The lever I00 is pivotally. connected to the lever 95 by means of the screw IN, the other end being bifurcated and enclosing a pin I02, which is secured in the known intermediate lever [03 (Fig. 2) of a type lever. The intermediate lever I03 is adapted to rock on the axis I04 and is connected by its pin I05 to a type lever 6 rotatably mounted on an axis I06 and carrying the clearance sign printing type.

A pulling I I hook I08 is connected to the interurged'by a tension spring I09 about'its pin I01v counter-clockwise and abutst against anabut- Q ment I I0 whereby its normal position ismain- I08 2. lug or projection I II which cooperates with tained. There is formed-on the pulling hook a pawl II2. This pawl H2 is mounted by 'means thereon and a chain. I driving a sprocket wheel I412. The sprocket wheel I4b is rotatablybut ofa pin 3 on the key lever H4 and is urged by a tension spring H5 in such a manner that it bears with its lug II6 against a projection II1 upon the key lever I I4. The key lever II4 pivots at H8 and is maintained in its normal position by a spring I I9 and an abutment I20.

The lever I I4, by means of which the clearance sign type lever B is struck, is not provided with a key but has a pin I2I whichcngages in the cam slot 99 formed in the lever 98; There is arranged below the pulling hook I08 the ratchet shaft N which is driven from the driving shaft I4 by a sprocket wheel I4a (Figs. 1 and 2) fixed not slidably mounted on the stationa'rypart Me of bearing I4e,' Fig. 1'1. The spindle I4d which is rotatably-and slidably mounted in the part He carries on its left end the clutch portion I41 and on its right end the knob I49. In the hollow hub of the sprocket wheel I4b, a collar I41: is fixed to the spindle I412, carrying two pins I4m which-protrude through slots 71. on the hub of /the sprocket wheel I4b, whereby rotation is transmitted from the, sprocket wheel. M1) to the spindle-f I4d. I The slots I4n are of such length that when the knob is'pushed to the left, the clutch portion I4! is allowed to engage with the clutch portion I4h secured to one end of the ratchet shaft N, whereby the shaft N rotates in T the direction-of the arrow'indicated in Fig. 2.,

The spindle Ila is locked in clutched and unclutched positions by a spring pin I40 which is adapted to engage in corresponding notches I42 and I47.

The totalizers 552' and 551' 'are provided with camsa, (Figs. 1, 4, 5) extending into the path of a pick-up mechanism secured by means of the screw I22 to the left cross footer 39. The pickup mechanism which substantially comprises a rod I23 extends at the other end through the medium of ascrew I24 into a horizontal slot (not shown) of the front wall 31 of the calculating or actuator mechanism. The hook I25 is pivotally mounted by means of a pin I26 on the rod I23 of the pick-up mechanism (Fig. 11). At the point I25b of'the hook-I25 the hook I21 is pivotallymounted on the end I210 of which a;

wire spring I21b acts which is secured'at I21c, Fig. 4, to the rod I23. In this manner, both hook- I25 and hook I 21 are maintained in their normal position, as shown'in Figure 4, which is'established by the hook I25.bearing on the pin I23a in a clockwise direction (Fig. 11). The normal position of the hook I21 is thus established by the latter bearing on the pin I231) in aclockwise.

direction. It is obvious that owing to the greater distance of the point of connection of the-h0ok I25 from the engagingpoint of the spring I21b,

the left end of the hook I25 is subjected to a.

greater spring action-than the left end of the so hook I21. This has the advantage'that during the left movement of the paper carriage 4', the

pose the end I21 of the hookI21 is also suitably shaped- .If the cam 55aof the respective totalizer has moved over the hook I21 it meets with resistance on thePcorrespondingly shaped projection I25 of the hook I25 subjected to comparatively greater elasticity while at the same time-the projection I21 of the hook I21 is adapted to bear behind the cam 55a of the totalizer. If the paper carriage 4 is now moved further to the left, it is obvious that the rod I23 will now be carried along and since the latter is secured at I22 to the cross footer 39 and the cross footers 39 and 40 are secured to the carriage 38b, these cross footers together with the carriage 9812 will also be carried along against the action of the spring 38d. If during this left movement,

spring 38d. By means of a locking member I29 (Fig. 4a) mounted on the left cross footer, the cross footers 89 and 40' may however also be held in their outermost left inoperative position (for .the sake of simplicity, only one cross footer is shownfin' Fig. 5 and also in Fig. 4;) in that the.

locking member I29 entersduriug its rocking .movement in a corresponding groove or notch cams 55d of the totalizers are easily adapted to press the hook I21 downwardly, for which pur- I30 of the bracket 38. In this position, which maintained in their inoperative position so that the cams 55a of. the totalizers cannot engage therein.

v is shown in Fig. 5, the hooksl25 and I21 are also There is also vconnect ed'to the rod I23 by the screw I24 (Fig. 7) a'lever I3l which is constantly urged on its rocking axis I24 counter-clockwise by a torsional spring I32. The position of the \70 4 I I I lever relative to the rod l23 .is due to the fact that it has ,2, lug I32a which bears against the rod I23. The lever I3I is provided at its free end with a groove I 33.

screw I24 is adapted to act. By means of a screw I (Fig. 2) the earring release lever- 42 is adapted to pivot downwardly on the right side of the carriage frame, the carriage release rail I36 (Figs. 2 and 7) being secured to the extension 135a of the said carriage release lever 42. The rail I36 is connected at its other side to a lever I31 which is also connected on the left side of the carriage frame by a screw' During its pivoting movement, the carriage release rail I36 acts on a roller I38 (Fig. '7) of a lever I40 which is freely rotatable on a spindle I39 and a lug I40a upon said lever I40 extends into. the plane of a lever I4I.- The lever MI is fixed to the spindle I39 and is provided with a right-angular lug I4Ia (Figs. '1 and 10). 'There is securedto the lug I4Ia by means of the screw I420. a lug I42 which acts on the member I43a of the lever I43 adapted to rotate about the pivot I44. When the lever I4I pivots counter-clockwise, the lever I43 also pivots the holder I45 of the stepping dog 449 about thepivot I45a counter-clockwise. The projection I450 of the holder I45 bears normally under the action of the spring 1145b againstthe abutment I46 which is secured by means of the screws I46a and I46b to the dog rocker I41. The stepping'dog I49 is pivoted at I48 to the holder I45. When the holder I45 is' swung out on the pivot I451 the stepping dog bears against the projection I460 formed on the part I46. There is rotatably mounted'between the two center-points I50 'and I5I- (only one -center-point is shown in Figure 10) the dog rocker I41 which carries the stepping dog I49 as well as the fixed dog I52. The latter is provided with an inclined surface or bevel I520; on which the teeth of the escapementwheel I53 are adapted to act. The escapement wheel I53 (Fig. 15) is secured to the shaft I54 rotatably mounted in the machine frame and is drivenby a rack I56 secured to the paper carriage 4 in any suit-= able manner (for instance, by screws) the said rack engaging in a toothed wheel I 55 which is also secured to the shaft I54. Since the shaft I54 extends through the dog rocker I41, a. hole I41. (Fig. 15) is provided therein which is large I enough so as not to prevent a free swinging out of the dog rocker I41. The arm I51 of. the dog rocker I41 is oscillated from the moving type lever 6 as hereinafter fully described.

In the normal position, a tooth of the escapement wheel I53 lies on the stepping dog I49, While the fixed dog I52 is out of engagement with the esca'pement wheel I53. The briefly described carriage escapement shown in Fig. 10 is usually provided in the Mercedes typewriter of which there are many thousands on the market and is only described herein for the purpose of a better understanding of the invention.

There is secured on the left end of the spin dle I39 (Fig. 7) the lever I55 which is constant ly urged by a tension spring I5Iia. connected thereto against an abutment I58? The lever I be is also connected a pin 'I5Iic to the already mentioned rod II on which the lug lIa shape shown which acts with its free end on a lug I62a upon a bell crank lever I62 which is adapted to pivot upon a screw I63 on the left side wall of the calculating mechanism. The horizontal member of the bell crank lever I62 is adapted to cooperate with the beveled end I3Ia of rod I3I and its slot I33 respectively. The two rods M and I6I are slidably mounted in a guide I64 provided on the machine frame.

There is also connected by a screw I65 to the already mentioned lever 45 '(Fig. 3) a rod I66 .which is connected with its other end at I61 .to

a bell crank lever I68a adapted to pivot on a spindle 168. A pin I69 secured to the horizontal member of the bell crank lever I68a; engages in a slot I10 of a rod I1I acting through the parts I12 and I13 on a known automatic carriage return means, which will now be briefly described.

During the stepwise left hand movement of the carriage 4 in which movement the rail 56 (Fig. 1) attached to the carriage 4 (Fig. 2), participates the well known right margin adjuster Ra provided on the rail 56 abuts against the lug I 14 (Fig. 3) of the rod HI and carries it to the left against the action of the spring I'Ilw. In this manner, the bell crank lever I12 is pivoted about point I12a counter-clockwise so that the U-shaped yoke orstirrup I13 is raised and thus releases the lever I15, the lever I15 connected to the lever I14a (Fig. 1) bearing with its pro-' jection I15a (Fig. 3) against the cross-piece I13a of the yoke I13.

. secured with the lever I16 Fig. 1 on the com- .mon rotatably mounted spindle I11 may then rock under the action of a torsional spring I18 counter-clockwise whereby the lever I16 is swung out in the same direction. The lever I16 en-.

Consequently the lever I1-4a,

gageswith a pin I19 in an annular groove I of a constantly rotating clutch portion It and shifts the same (shown in Fig. 1) to the left so I that its teeth enter into engagement with the .clutch portion I82 thereby rotating the wheel 1 the left by the lever I15) is again moved to the right against an abutment or stop, I15e on the frame while the lever I15 is also moved to the right and consequently the member I13 with its cross piece II3a can againdrop in front of the projection I'I 5c of the lever I15. During the movement of the lever I15 to the right, the lever I'I4a was of course also rocked clockwise whereby the clutch IIZI and I82 over the parts I11 (Fig. l.) I16 and I19 is again opened and the return movement of. thecarriage interrupted. I

The well known decimal tabulator key levers I'9I are adapted to rock about a spindle ISI'c (Fi 2) in the machine frame and carry on their 15 front end thekeys 43, while with their rear bifurspindle 200 also carries a lever 203 which coopera the roller 21a comes in-contact with the other cated end they are connected to tabulator rods I93 by means of the pins I92.- The tabulator rods I93 are adapted to move vertically. At the lower end, the tabulator rods are guided'by a bracket I94 arranged on the machine frame I and at the upper end, by a spindle I95 extending through longitudinal .slots I93a of the tabulator rods said spindle I95 being mounted in extensions I96 formed on the left and right hand portion of the machine frame. The tabulator rods I93 are also provided with hook-shaped slots I93b. A member I 91 is also adapted to rock on the spindle I95 and has a pin I91a which extends through all the slots I93b of the tabulator rods I93. A projection I91b of the member I91 cooperates with the le ver.. I4I (Figs. 2 and 7) When depressing a decimal tabulator key I9 I the lever I4I with its extension I42 also acts on the angle lever I4 3 (Fig. 10) thereby rocking the stepping dog I49 out of the path of the escapement wheel I53, according to which the carriage escapement mechanism is rendered inoperative.

The levers I99 carrying the locking beam I98 (Fig. 2) which is designated I9 in the aforesaid U. S. Patent 1,862,240, are secured to the rotatably mountedshaft 200. Now if the counting slide 32 during the downward movement actswith its bevel 20I on the locking beam I98, the'shaft 200 will rock clockwise, whereby the unlocking lever 202 connected to the shaft 200 acts on the denominational locking lever 202a which happens to be in thecomputing position opposite lever 202. v. The purpose of the locking levers 202a is known and is therefore not fully described herein since its operation is fully described in U. S. Patent 1,270,471

ates with a lever 205 mounted'on a spindle 204. When the shaft 200 turns, the lever 203 rocks clockwise and effects by means of the lever 205 a turning of the shaft 204 and a counter-clockwise rocking of the unlocking lever 206 secured to said shaft 204 and causes the unlocking of thecross footers. I,

The lever 206 has the same function as the lever 202 since it acts on the unlocking levers 206a of the'cross footers which are quite similar to the unlockinglevers 202a of the'totalizers. I

The operation of the invention is as follows: By depressing a calculating key l9 the key lever 20 is rocked about 2| clockwise, whereby the member 2012 of the key lever 20 is rendered inoperative relatively to the projection 28a formed on the latch28 and consequently releases the latch 28., This latch 28 is now shifted by the spring 29 in the direction of the arrow 1 to such an extent that its projection engages with the constantly rotating toothed wheel I 8 and thereby couples the cam disk 21 with the same sothat the camdisk participates inthe rotation. At the same time,-

the hook-shaped extension 201a of the lever 201 slides down under the tension of the spring 208 on the top surface of the rail 26 until the extension 201a with its terminal 201D. engages under the rail 28 at the last moment of the downward movement of the key lever 20, whereby the latter is maintained in its depressed position.

When the cam disk 21 begins to rotate, the

roller 21a arranged thereon comes out of contact rail 28. Prior to the completion of a revolution.

interval.

end (in theformof a cam) of the lever 21b and rocks the same on its pivot 2I counter-clockwise against the action of the spring 210 engaging therewith until the roller 21a goes beyond the dead center 21d. From this moment, the lever 21b exerts a driving action on the roller 21a and on the camdisk 21, whereby a rotatory motion independent; of the shaft I0 is imparted to the 'cam disk 21 and simultaneously effects a lead of 10 the cam disk relative to the shaft I0 and the toothed wheel I8 respectively, thereby facilitating the uncoupling of the pawl 30 from the ratchet wheel I8. I

now, it may be'recalled that, at this moment, 1 the hook 2011) of the lever 201 through the agency or the spring 208, is still heldunderne'ath the ledge 26. Consequently, the right-wardly bent lug 201a (Fig. 2a) of lever 201 is in the circumferential path of the leftwardly bent lug 28a of the 20 pawl 28, rotating as a whole with the cam 21in thedirection of the arrow a (Fig. 2), while the end 20b of the key lever 20 is out of the circumferential path of the leftwardly bent lug 28a of the pawl 28. As a result, the lug 28a of the pawl 25 28 impinges against the lug 2010 of the lever 201, thereby pushing the lever 201 with its hook 201b out of engagement with the lower side of the ledge 26, while at the same timethe tooth 30 of the .pawl 28 is also brought' out of engagement with 30 its ratchet wheel I8. If however, at this moment, the key I9 should still be held depressed .by the Y operator, 9. re-engagement of the pawl 28 with j the ratchet wheel I8 is not'possible, owing to the fact that the lever 201 is not permitted to slide further to the right in Fig.2, on account of the shaft 2I, while on the other hand, the cams 21' and 21 are urged in the direction of the arrow 11 by means of the strongspring 21c through the parts 21b and 21a. Now, if the key I9 is released, 40 the lug 2010 of the lever 201 slides off from the the lug 201) or the ltver 20 is moved into the droumferential path of the lug 28a of the pawl 28, which lug in connection with the strong spring 210, through theintermediary of the parts 21b, 21a, 27' and 27 holds the pawl 28 out of engagement with the ratchet wheel I8.. When the end 2010 of the lever 201 slides off from the lug 28a of the pawl 28, the hook 201bcomes in contact '50 lug 28a of thepawl 128, while at the same time with the oblique face ofthe ledge 28, thus hold- If at the time, when thepawl 28 impinges against the end 2010 of the lever 201, the operatorhas already released the key I9, the same movements will take place, the only difference being that the changing over of the lug28a of the pawl 28 from the end 2010 of the lever201'to the end 201). of the lever 20 is effected, so to speak, without any Upon depression-of acalculatlng key I9 the cam disk 21 ,participatesin the rotation of the driving shaft I0 and consequently the corresponding counting slide 32 .ihovesdownward, the cam slot 34 thereof acts on the spindle 35 whereby the frame 2I0 and consequently, the spindle 38 is rocked counter-clockwise in accordance with the;

value of the depressed key. The rocking move- 70,

ment corresponding to the value of the depressed key is efiected in theknown manner by the different-inclinatlon of the slots '34 of the various counting slides 32. For the purpose of transmitting this rocking movement to the counters, there 78 'is secured, as already stated to the spindle 36 a segment (not shown) which is designated 21 in U. S. Patent No. 1,862,240 and brings the value corresponding to the depressed key I9 into the totalizer and cross footer which is now in operative position. After a complete transmission of the value i. e. prior to the completion of the downward movement of the counting slide 32, the pin 32a. arranged on the latter acts on the corresponding numeral writing key levers which are similar in shape to the clearance sign printing key lever II4 except that they are provided with keys S. It is obvious that parts similar to the parts H2, I08, I03 and 6 are also coordinated to each of the said numeral writing key levers. However, none of the counting slide pins 320, acts on the clearance sign printing key lever II4. -It it therefore obvious that when the pin 32:; acts on the corresponding writing key lever the corresponding type lever will strike against the platen 3 whereby the value inserted is printed. In this manner, the type lever acts on the universal bar 2 and moves it in the direction of the arrow g. The lever 2I2 is thereby rocked on its fixed pivot 2I2a counter-clockwise and consequently the rod 2I3 is drawn in the opposite direction of the arrow 9 whereby the dog rocker I41 is rocked by the arm I51 (Fig. 10) about the center points I50 and I5I against the action of the compression spring I5Ia. In this manner, the stepping dog I49 becomes disengaged from the escapeme'nt wheel I53 and the fixed dog I52 becomes engaged therewith, the loose ratchet tooth I49 swinging upwardsabout the spindle I48 under the action of a spring.

When the type lever 6 has struck the platen;

3, the tension spring I09 engaging with the pulling lever I08 returns the type lever to itsnormal .position whereby the dog rocker I4I also returns to its normal position under the action of. the compression spring I 51a. -The carriagemulling spring then acts on the paper carriage 4 and the rack I56 secured thereto, which drives 'the escapement wheel I 53 by means of the wheel I55 and the spindle I54 in the direction of the arrow indicated in Fig. 10 while the stepping dog I49 which has meanwhile returnedwith the dog rocker I41 to the normalposition engages in the next tooth-space of the escapement wheel I53 so that the paper carriage 4 is advanced one step for printing the next letter.'

During this stepwise movementof the carriage from right to left, the cam 55:; of the totalizer 552 now entering the operative position has operative connection with the hook I 25 of the cam operating mechanism I23 whereby the cross footers 39, 40 are carried by the-carriage 4 until the respective totalizer for instance 55i again moves out of the operative position, which takes place in the following manner.

Whenwriting the value which is in the unit position of, the cross footer 39 the pin I28 (Fig. arranged on the machine frame I acts in consequence of the movement of the carriage on the elevation I251; 01 the pick-up hook I25 and swings the latter into the position shown in Figure 5 whereby the pick-up mechanism I23 and the cam 55aand can return to their normalposition shown in Figurel. By the-movementofthe carriage which is caused when writing the value which is in the unit position, the projection v55b.of the totalizer 55i also acts. onthe projecthe pawl I I2 positively connected to the key lever the carriage will take place.

"-to left the cross footers 39 and-'40 are automatithe left, whereby the lever'52 releases the lever so that the springs 81 (Figure 2) can act on the rake-like contacting rail 89. The latter cooperates with the driving wheels Z of the total- I izer wheels B (Fig. 2) wherein, as stated, that 5 tooth is shortened which in the zero position .of the totalizer wheels B lies" opposite the rail 89 whereby a complete swinging out of the rail 89 is then possible. This swinging out of the rail 89 is therefore only possible when the shortened 10 teeth of all wheels Z are opposite thereto i. e. only when all totalizer wheels B are at zero.

If, after copying the value standing on the cross footer, the cross footer 39 is at zero, the springs 81 are adapted to completely'swing the 8 member 89 clockwise. Consequently, the slide 8| moves downward and swings the yoke on the axis 12 clockwise (Fig. 2) the said yoke comprising the U-rail I3 and the levers l0 and I4. In this manner, the lever I4 acts on the arm 94 of the levers 93, 95 and 98 and also rocks the same clockwise so that the cam slot 99 of the lever 98 acts on the lever H4 and presses it downward against the action of its spring 9 whereupon I I4 causes the pulling hook I08 to engage in the known manner with the ratchet shaft N constantly rotating in the. direction of the arrow n The intermediate lever I08 is thereby swung out on the axis I04 clockwise and thus eifeots the striking of the typelever 6 bearing the clearance sign against the platen 3 whereby the clearance sign is printed.

During this operation, however, the rod I00, which is connected to the lever 95, has also been moved by the clockwise swinging movement of the lever 95 in the direction of the arrow :1: (Fig.

2) to such an extent that the bifurcated end of the rod is moved by the pin I02 on the intermediate lever I03, during the carryingalong of the pulling hook I08, by the cam shaft N contrary to the direction of the arrow 1', whereby the member 89 is returned by meansof the elements 95, 93, 94, 74, I3, 11, I9, 8| and .85 to-its normal position shown in Figure 2,- the springs 81 being again tensioned and the lever 52 again engaging over the lever 10.

The clearance sign printing is of course also operated in thesame manner by the action of the projection 550 of the totalizer 551- on the rod 52.

When the rod 5| is guided to the left by the projection b of the totalizer 551 in the direction of the arrow d, the projection 53 is released, after the totalizer has caused a movement of the carriage, from the projection 55b of the totalizer 551' in consequence of the bevel or inclined surface 51a of the triangular groove 51 coming in contact with the pin 59, whereby the parts 5|, 62 can return to their normal position under the.- action of the spring 66;; The same of course also applies to the projection 550 of the totalizer 5,51 and the rod 52;

If the clearance 'sign has now been printed,

the margin adjuster Rawillabut, during'the further stepwise left, movement of the carriage, against the luglll (Fig.3) 'ofthe' rod III, as already stated, whereby the return movement of Itis obvious from the above description'that duringa movement of the carriage from right cally carried along. 25

clearance sign printing mechanism operative while the furtherstepwise left movement of the, carriage renders the carriagev return mechanism operative, which mechanism moves the carriage from left to right. During this carriage movement from left to right, however, the said mechanisms are not rendered operative: on account of j the fact that the cam hook I25, the levers 5I and 52 and the lever III are merely forced downwardly by their corresponding cams 55a, 55b, 55c and the margin adjuster Ra without exerting any effects.

It is however desirable in many cases, for instance, during the free left movement of the paper carriage 4 which occurs when depressing the carriage release lever 42 that the movement of the carriage is not rendered effective on these mechanisms since otherwise a clearance sign may be unintentionally printed or a carriage return movement may take place and the cross footers carried along unnecessarily. As it is obvious from the preceding description that the clearance sign is printed in any position of the cross footers relatively to the bracket 38 when they I desirable in consequence of the complete left movement of the cross footer or cross footers to also render the clearance sign printing means and the pick-up mechanism-inoperative. I

However, when depressing the tabulator key it is desirable, as is subsequently elucidated, to

render the left movement of carriage inoperative,

only on the carriageretum means and the clearanee sign printingmeans but'noton the pick-up mechanism,

I the lever I40 acts on the yoke I59, which is thereby pivoted clockwise on the axle'I60 and the rod I6I which is connected to the member I59b by the pin I590 is moved forward. The rod IBI acts on the lug I62a of the lever I62 so that the same is pivoted on its axis I63 in such a manner that it extends into the moving path of the rod I3I.

Moreover, the lever I40 when pivoting acts with its lug I40a on the lever I which is consequently swung out in the same direction. The

-- lever I (Fig. 10) with its lug I4Ia and the part I42 secured thereto by the screw I 42a acts on the *lever I43 and pivots the latter clockwise (Fig. 10)

whereby the stepping dog I49 becomes disengaged from the escapement wheel I53 so that the carriage 4 is no longer hindered in its movement and can move freely to and fro.

Moreover, owing to the swinging movement of the lever I the axle I39 secured thereto is also rocked, whereby the rod H is moved by the lever its -lug 4m (Figs. 3 and 7) acts on the'lever 45 and rocks m forwardly.- The rod 4| with the latter on its axis44a whereby the lever I66 ismovedto the left by means of the screw I and the bell crank lever I680 is swung out clockagainst the action of the spring I32.

wise. Owing tothe pin I69 engaging in the slot "0 of the rod III, the free end thereof is moved downwardly whereby the lug I'I4 is'brought out of the path of the margin adjuster Ra; so that the latter can no longer actuate the carriage re- 5 turn means.

' When the lever 45 rocks clockwise, this lever acts against the bevel or inclined surface 46 of the lever 41, 41a, 41b and rocks the latter against the action of the spring 41d clockwise, while the pin 49 of its arm 41b acts on the levers 5I and 52 and rocks the latter about the centers 60 and 6I downwardly so that they come out of the moving path'of the projections 55b-and 550 of the totalizers 552' and 551'.

Since during the movement of the carriage 4 from right to left, the cam projection 55a enters into engagement with the projection I25 (Fig. 4) the cross footers 39 and 40 will be carried to the left in the above described manner. Since, however, the rod I3I (Fig. 7) also participates in this movement, the rod with its bevel or inclined surface I3Ia comes in contact with the raised lever I62 and is thereby swung about the screw I24 At the 25 moment wh'en'the projection I 25 becomes disengaged from the cam 55 in the above described manner, the lever I3I with. its groove I33 engages the lever I62 by the action of the spring I32 whereby the cross footers 39 and 40 are prevented from returning to their normal position (right position) and consequentlyall cam projections 55a of the totalizers 551i and 551' cannot affect the hook I25. While the carriage release lever 42 is depressed, the paper carriage 4 is 35 adapted to move freely to the left and right without having any influence .on the mechanisms (which are usually dependent. on its movement) such as the carriage escapement means, carriage return'mechanism, clearance sign printing means 40 and pick-up mechanism for the cross footers.

' Upon releasing the carriage release lever 42 again, the escapement mechanism shown in Figure 10 is again brought into the operative posi-.

tion 1. e. the stepping dog I49 again engages with 45 the escapement wheel I53 and the carriage rev lease rail I36 simultaneously releases the roller I38 and the lover I 4| respectively so that the lever HI and. the lever I 40 as well as the yoke I59,

I59a, I59b and-the rod I 6| swing back to their 50 normal position by the action of the spring I58a on the lever I58. The bell crank lever I62 comes outof engagement with the groove I33 of the rod I3I so that the cross footers 39, 40 together with the pick-up mechanism I23 also return to 55 their normal position. The rod M as well as the' pa ts 4la (Fig. 3) 45, 41a, 41., 41b, 5|, 52, I66,

when depressing a decimal tabulator key 43 while the pick-up mechanism for the crossfooters is not rendered inoperative. The above is necessary forthe following reasons.

If when depressing'a decimal tabulator key43 the pick-up means I25 were rendered inoperative, v i. e. maintained by hook I3I and lever I 62 in their left position as shown in Figure 9 and furthermore if the depressed decimal tabulator key is released and then be carried along by the counting mechanism. The comparatively long dis- .tance y from hook I25 to the cam projection 55a of the counting mechanism 553! must be covered. If, as in connection with rapid operators, a calculatingkey I9 is struck directly after the release of the decimal tabulator key 43, the corresponding value will be inserted, during the return of the cross footers 39 and 40 on the long distance 3 into the calculating mechanism whereby the cross footer will be damaged or if this does not occur the inserted value will enter the wrong place of correspondingcross footer.

If, however, when depressing the decimal tabulator key 43, the pick-up means is not rendered inoperative, the hook I is adapted to jump during the movement of the tabulator i. e. 25 during the depression of the decimal tabulator key 43 from one totalizertothe other totalizer. The means which, when'depressing a decimal tabulator key 43 prevents the pick-up means being rendered inoperative, operates in the followto ing manner;

If a decimal tabulator key 43 (Fig. '2) is depressed,-the tabul-ator key lever I9I swings on its axis |9Ia andunoves the corresponding rod I93 upwardly. In this manner, the rod with 'its in-- clinedslot I93b acts on the pin mm of the 'part I91 and swings the same on the axis I95 clockwise. During this movement, the part I91 with its projection- I911; acts on the lever l4I (Fig.

preferably effected automatically by cams 2I4 hook I 25 is held in its inoperative position (shown in Fig. 5) and the cam hooks 55a of the totalizers 55b and 550 cannot engage the said pick-up hook I25 during the movement of the paper carriage. However, during the said movement of the cross footers to the left, the screw I24 (Fig. 3) provided. on the pick-up mechanism also moves at the same time onto the inclined edge'or bevel I34c of the member I34, I 34b, whereby the same is rocked about the axis '48 clockwise and acts with its lug I34a. on the lever 4111 so that the latter also swings against the action of the spring 41d clockwise and with its pin 49 brings the levers SI and 52 out of the position shown in Fig. 4 into the position shown in Fig. 5 wherein the projections 53. and 54 are located outside the moving path of the projections 55b and 550 and consequently the clearance sign printing means is also rendered inoperative.

Rendering the cross footer inoperative consists in shifting the cross footer into the nonworking position shown in Fig. 5 and latching there but it is also understood that any other mode of rendering the cross footer inoperative may be used.

It may for instance also be rendered inoperative by placing the reversing gear belonging thereto at neutral as already stated. This is (Figs. 6, 13 and 14) arranged on the totalizers 552' and 551' acting on a bell crank lever 2I5 which is pivotally mounted at 2I5y and engages 'with its fork 2I5a. around the bolt 2I6 control- 7) and rocks the same. The shaft I39is rotated re and the lever I58 isthereby rocked counterclockwise. The rod 4| isthps moved forwardly .:and the carriage return means and the clearance sign printing means are thereby rendered inoperative. The lever -I49 loosely mounted on the axle I39 and also the yoke I59, the rod IIiI and the lever I62 are however not, actuated so that in this case the pick-up means and the cross footers 39 and 40 respectively are not arrested in their left position biit are moved to the right by each totalizer.- If the totalizer has left the working position of the machine; thecross footers return to their normal position under the tension of the tension spring in order to be carried a ain by the next totalizer. In order that when making calculations wherein the cross footers 39 and 49 are not employed. the latter maybe kept inoperative; the known reversing gear (not shown and which is designated m, m in U. s; Patent 1,270,471) for 0 the main driving wheel I? (Fig. 5) may be placed at neutral so'that no values would be transferred therein. The cross footers 39 and 40 would however be constantly carried by the totalizers 552' and 551 unnecessarily. In order to N, the wheel P rein ling the reversing gear not shown, since the function thereof is sufliciently known from the aforesaid U. S. Patent 1,270,471. However, it may be stated that when setting the cam 2I4, adjustable by the totalizers, in the position des- 'ignated A in Figure56,,the said reversing gear is shifted over the bell crank lever 2I5 so that 40 the wheel P rotates in such a manner that the cross footers add If the cam 2I4 is placed at ains inoperative while when setting the cam 2 I4 at "8 the wheel P rotates'so that the cross footers subtract. There is riveted to the bell crank lever 2l5 a pin 2| 5b, which is adapted to act on an arm I340 mounted on the arm I34b of the,member I34, I340. If, for instance, a totaliz'er 55 assumes the operative position and its controlling cam 2J4 is placed at neutral, the lever 2l5 will be swung into the position shown in Fig. 6 by dotted lines and in Fig. .14 by solid lines, wherein the pin 2| 5!;

moves on to the elevation 134d of the arm I340 so that this arm as well as the part I34, I34?) 55 are swung out into. the dotted position while the latter with its lug I34u. renders the clearance sign printing means inoperative as described above.

. It is obvious that in the same manner the pickup hook I25 may also be swung out by the lever 65 avoid these unnecessary movements of the cross footers 39 and 40, the cross footers 39' and 40 are moved out of the position shown in Figure 4 into the left position shown in Fig. ,5 (for the sake of cleamess only the cross footer 39 is shown in Figs. 4 and 5) and locked in the said position I 5 contacting with the pin I28 whereby the pick-up 2I5 into the inoperative position shown in Fig. 5

without it being necessary to shift the cross footer into the position shown in Fig.5.

For this purpose, a lever 2I5d' isconnectedto the machine frame at point 2 I 50 and is provided with a lug 2I 5e similar to the lug I34d of the arm I340, the pin 2|5b being also adapted to engage with the lug 2I5 e. If the cam 2I4 of any cross footer is placed at N the lever 2 l 5d will be swung against the actionof its spring 2I5f whereby the part 2 I 51' connected at the point 2I5g' and adapted to slide by means of a pm and slot joint 2I5h,

the part I250 01' the hook I wherebythis hook with the hook I2! is swung into the inoperative position shown in Fig. 5.

If, however, the cam 2 is inits subtraction position, the lever 2l5 will be rotated still further in clockwise direction. Accordingly the pin 215D of lever 2| 5 is moved beyond the lug I 34d into the recess l34d' and beyond the lug 2l5e of lever 2l5d, in which position the disabling means remain inoperative. They are only made momentarily operative when pin 2| 5b is passing over lugs l34d and 2l5e, which operation is without any importance, since this operation takes place mechanism for said plurality of crossfooters,

controlling connections between each of said crossfooters and said clearance sign printing mechanism, a common member for rendering said controlling connections inoperative, and common means for operating said member and said means for rendering the carriage return means inoperative, said common means operating while said carriage positioning means is operated.

2. A mechanism for typewriter calculating machines and the like including clearance sign printing mechanism, crossfooters, a carriage, to-

talizers, means for testing the clearance condi.-

tion of the crossfooters and controlling said clearance sign printing mechanism, abutments upon the totalizers, said testing and controlling means including trip levers, pawls having their longitudinal axes disposed parallel to the direction of the carriage for being carried 'alongby said abutments to actuate said trip levers, and means for shifting said pawls out of the path of said abutments.

3. A mechanism for typewriter calculating machines and the like including a. clearance sign printing mechanism, crossfooters, means for testing the clearance condition of the crossfooters and initiating the operation of said clearance sign printing mechanism, means for rendering the testing and operation initiating means inoperative, means for locking the crossfooters in inoperative position, and connecting means between said crossfooters and said means for rendering the testing and operation initiating means inoperative, said connecting means operating said means for rendering the testing and operation initiating means inoperative when said crossfooters are locked in inoperative position.

4. A mechanism for typewriter calculating machines and the like including a carriage escapement, carriage return means, clearance sign printing means, crossfooters, means for testing the clearance condition of the crossfooters and controlling said clearance sign printing mechanism, pick-up mechanism for the crossfooters, means for rendering inoperative the carriage escapement, means for rendering inoperative the carriage return means, means for rendering lnoperative the testing and controlling means, means for rendering inoperative the pick-up mechanism for the crossfooters, a control member operating said first three inoperative rendering means, a carriage release lever, a lever operative by said carriage release lever for operating said control member and also adapted to operate the means for rendering inoperative the pick-up mechanism for the cross footers.

5. A mechanism for typewriter calculating machines and the like including a carriage return mechanism, a clearance sign printing mechanism, crossfooters, means for testing the clear-' ance condition of the crossfoo-ters and controlling said clearance sign printing mechanism,

means for rendering inoperative the carriage return mechanism, means for rendering the testing and controlling means inoperative, a control 'member for both of said inoperative rendering 'means, a lever in rigid connection with said control member, and connecting means between said lever and said means for rendering inoperative the carriage return mechanism and said means for rendering the testing and controlling means inoperative.

, 6. A mechanism for typewriter calculating machines and the like including clearance sign printing mechanism, crossfooters, releasable means for testing the clearance condition of the 'crossfooters and controlling said clearance sign printing mechanism, a carriage, carriage positioning means, means for rendering the testing ,the carriage, one end of each pawl being connected to said testing and controlling means the free end of each pawl being carried along by said abutments for releasing said testing and controlling means, said free-ends being connected by a pin and slot connection to said inoperative rendering means controlled by said carriage positioning means whereby said pawls may be removed vertically to their longitudinal the path of said abutments.

7. A mechanism for typewriter calculating machines and the like including clearance sign printing mechanism, crossfooters, releasable means for testing the clearance condition of the crossfooters and controlling said clearance sign printing mechanism, a carriage, carriage positioning means, means for rendering the testing and controlling means inoperative and controlled by saidcarriage positioning means, totalizers on said carriage, abutments upon the totalizers, pawls having their longitudinal axes disposed parallel to the direction of movement of the carriage, one end of each pawl being connected to said testing and controlling means the free end of each pawl being carried along by said abutments for releasing said testing and controlling means, said free ends being connected by a pin and slot connection to said inoperative rendering means controlled by said carriage positioning means, whereby said pawls may be removed vertically to their longitudinal axes from the path of said abutments, and a fixed pin cooperating with control openings in said pawls when the latter are carried along by said abutments, whereby said pawls are released .from said abutments after having tripped said testing and controlling means.

8. A mechanism for typewriter calculating maaxes from chines and the like including clearance sign printmeans inoperative and Controlled by said carriage positioning means, totalizers on said carriage, abutments on said totalizers, pawls having their longitudinal axes disposed parallel to the direction of movement ofthe carriage, one end of each pawl being connected to said testing and controlling means, the free end of each pawl being carried along by said abutments for releasing said testing and controlling means, said free ends being connected by a pin and slot connection to said inoperative rendering means controlled by said carriage positioning means whereby said pawls maybe removed vertically to their longitudinal axes from the path of said abutments, and a fixed pin cooperating with control openings provided in said pawls, said control openings being of such configuration and said pin so positioned therein that upon a movement of the pawls in direction at right angles to the longitudinal axes thereof the fixed pin is inefiective upon said control openings, while ,when the pawls are engaged by said abutments said pin and control openings will cause a movement of the pawls at right angles to the longitudinal axes thereof when said pawls are moved in the direction of their longitudinal axes, whereby said pawls are caused to be released from said abutments after having tripped said testing and controlling means.

9. A mechanism for typewriter calculating machines and the like including clearance sign printing mechanism, crossfooters, means for testing the clearance condition of the crossfooters and controlling said-clearance sign printing mecha- "nisrn, means for rendering said testing and controlling means inoperative, a carriage, totalizers on said carriage, abutments on said totalizers, carriage positioning means, pawls having their longimovement of the carriage, one end of each pawl being connected to said testing and controlling means the free end of each pawl cooperating with said abutments and-being connected to said inoperative rendering means, said inoperating rendering means including a pivoted member for moving said pawls atright angles to their longitudinal axes, and means actuated by the carriage positioning meansv for actuating said pivoted member. 1

10. A mechanism for typewriter calculating machines'and the like including clearance sign printing mechanism, crossfooters, releasable means for testing the clearance condition of the crossfooters and controlling said clearance sign printing mechanism, a carriage, carriage positioning means, means for rendering said testing and controlling means inoperative and controlled by said carriage positioning means, totaiizers on said carriage, abutments on said totalizers, pawls having their longitudinal axes disposed parallel to the direction of movement of the carriage, one end of each pawl being connected to said testing and controlling means the free end of each pawl being engageable by said abutments to be carried along for releasing said testing and controlling means, said free ends being connected by a pin and slot cOnnsctiontosaid inoperative rendering means, controlled by said carriage positioning 10 means whereby said pawls may be removed from the path of said abutments, control openings in said pawls, said control openings being of triangular configuration with the hypotheni of said triangular openings averted from the direction 16 of the carriage feed, and a fixed pin cooperating with'said hypotheni edges on the carrying along of said pawls to release the same from said abutments after said pawls have released said testing 7 and controlling means.

tudinal axes disposed parallel to the direction of 11. A mechanism for typewriter calculating machines and the like including a carriage, a car-' riage positioning means, clearance sign printing mechanism, crossfooters, releasable means for testing the clearance condition of the crossfooters and controlling said clearance sign printing mechanism, means functioning while said carriage positioning means is being actuated for rendering the testing and controlling means inoperative, totalizers on said carriage, abutments arranged in diiferent planes on said totalizers, pawls having their longitudinal axes disposed parallel to the direction of movement of the carriage, one end of each pawl being connected to said testing and controlling means and their free ends cognected to said inoperative rendering means, said pawls having noses lying in front of each other and in the planesof said abutments, said abutments being adapted to operate one of said pawls at a time for tripping the respective testing and controlling means for said clearance sign printing mecha nism. I

12. A mechanism for typewriter calculating machines and the like including carriage positioning means, clearance sign printing mechanism, crossfooters, totalizers, releasable means for testing the clearance condition of the crossfooters and controlling said clearance sign printing mechanism, abutments upon the totalizers, means cooperating with said abutments and connected to said testing and controlling means for releasing the latter, and means controlled by said carriage positioning means and connected to said cooperating means to render the latter inoperative while the carriage positioning means is being operated. 

